ZDI lists November 2026 Microsoft fixes, one Outlook bug exploited
CVE-2026-124194 is the only listed flaw marked exploited; it is a Moderate CVSS 6.5 spoofing bug.
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CVE-2026-118711
Stack buffer overflow in Microsoft Excel (user opens file)
- CVSS 3.1
- 8.8 high
- EPSS
- —
- Published
- ·
- Modified
AI analysisSummaries by Vani AI
A stack-based buffer overflow in Microsoft Office Excel lets an attacker run code if a user opens a malicious file. The flaw is reachable over the network without prior authentication, but it requires user interaction. Successful exploitation gives the attacker the same high impact on confidentiality, integrity, and availability as the user running Excel. Microsoft has not listed affected builds.
What to do: Apply Microsoft's update for CVE-2026-118711. Microsoft has not named a fixed version or a workaround.
| Product | Affected |
|---|---|
| Microsoft Office Excel | — |
Estimated exposure
No basis for an estimate.
Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.
Description · NVD
Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
- Weakness
- CWE-121
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H